1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e131e96bc9e4ee647675b14c1805deb39357903b144c1ac017a7d5be2651852. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a72620e9-e8b8-4f8b-ab84-eb678b607d72.json and https://artists.proofprofile.net/proofs/artist/a72620e9-e8b8-4f8b-ab84-eb678b607d72.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Long Way Back (Original Motion Picture Soundtrack)
Europa Ambient Moods (Original Game Soundtrack)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b19f4b698c8123244698f5e6b505d36df6349ec4efdeb70c985a4c6ca00c93. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFT2421170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0182be46ef4e8025fbeeded6228c414c2b14787a3d6e7e7fd53562aa9a2317bc. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:51:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2486454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa143bc4fd5d0152e4705e61e01602736996b0164f7c5c455e2ff812ca50ba94f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2486455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6a27fc70711c0f1904aaa7be8c94ee0303511a4dfc59b3be64bd5ebf4f6115. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:08:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2486457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea1545a6a6a21ab3365508e48282d71b21110d430eeb807cd641eeeb9df8a5c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2486467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538fe2f6921f5d742f89d3421f00106d7e5869e9b0a83c941948ac00fe425d02. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2486468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf302a86bfcc4ba1e2275416e3d43e73e4cbf541c77e7fdb1fa32960c70f81cb7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2486469.
Tranquil Isle (Original Game Soundtrack)